package com.sky.service.impl;

import ch.qos.logback.core.LayoutBase;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordEditFailedException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.apache.tomcat.util.net.openssl.ciphers.Authentication;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.RequestBody;
import springfox.documentation.spi.service.contexts.SecurityContext;

import javax.security.auth.login.LoginException;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传过来的密码进行md5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //对象的属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置账号状态，1启用，0禁用
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码，默认123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //创建时间,更新时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        //设置当前记录的创建人id和修改人id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    /**
     * 分页查询
     * @param pageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO pageQueryDTO) {
        //select * from employee limit 0,10
        //开始分页查询
        PageHelper.startPage(pageQueryDTO.getPage(),pageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(pageQueryDTO);
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
//        Employee employee = new Employee();
//        employee.setId(id);
//        employee.setStatus(status);
        Employee employee = Employee.builder()
                .id(id)
                .status(status).build();
        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }

    /**
     * 编辑员工信息
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }

    /**
     * 修改密码
     * @param passwordEditDTO
     */
    @Override
    public void updatePassword(PasswordEditDTO passwordEditDTO) {
        String oldPassword = passwordEditDTO.getOldPassword();
        String newPassword = passwordEditDTO.getNewPassword();
        //获取用户id
        Long empId = passwordEditDTO.getEmpId();

        //得到用户数据
        Employee employee = employeeMapper.getById(empId);
        //对密码进行加密处理
        oldPassword = DigestUtils.md5DigestAsHex(oldPassword.getBytes());
        newPassword = DigestUtils.md5DigestAsHex(newPassword.getBytes());
        //验证原密码是否正确
        if(!employee.getPassword().equals(oldPassword)){
            throw new PasswordEditFailedException(MessageConstant.PASSWORD_EDIT_FAILED);
        }
        //写入新密码
        Employee employee1 = Employee.builder()
                        .id(empId)
                        .password(newPassword)
                        .build();
        employeeMapper.update(employee1);
    }

}
